Solutions and tutorials for IT&C development
The interface is a set of definitions of properties, methods and events. Unlike classes […], interfaces do not contain the implementation. Interfaces are implemented […] by classes, but are defined as separate entities. A class that implement an interface must implement all elements defined in that interface. Defining a VB.NET interface is achieved using the […]
Read More →The delegate is a pointer that allows the call of a function indirectly through its memory address. The delegate is used to call methods of other objects. It is similar to the function pointer used in other programming languages. The difference is that the delegate is a reference type on System.Delegate class. Delegates are useful […]
Read More →The event is a message sent by an object and announces the application of production a fact.Events are implemented using delegates […].For example, clicking a command button in a graphical interface causes the appearance of the event Click. The event is treated by a procedure. Events are declared in the classes, structures, modules and interfaces […]
Read More →The pointer type variables allow the accessing of memory areas with numerical content for the management of the values which represent memory addresses. The dimension of a pointer variable depends on the processor architecture.In the C++ programming language, the definition template of a pointer variable is:
Read More →A variable corresponds to a location of memory, which stores values when performing calculations.Variables are used in calculations, comparisons. They have established a name in the source program, and accessing the value stored in memory location is achieved by variable name. In VB.NET, a variable has an associated data type […], without being required to […]
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